Geography Flashcards
How are deserts classified?
By the amount of precipitation per year.
How much % does deserts cover of the earth?
30%
Types of Deserts
Semi-Arid
Arid
Extremely Arid
Where are deserts located?
Around the tropic of Cancer and Tropic of Capricon
What are the seasons like?
Hot summers and warm winters
Temperature range
From 45C to -15C in 24 hour period.
Why rain is rare?
Winds become sry when they reach the western sides of the continents, and hence don’t bring any rain with them.
What are cold deserts?
Lie on the high ground of the tropic of cancer and south of the tropic of Capricorn
What are Polar Deserts?
Any precipitation is snow
Winters are cold and windy, while summers are dry and mildly warm. Lie very north and very south.
Where are deserts normally located?
Found in the interior of continents.
Winds blowing over the continents are dry by the time they get to the interior of the continents the Leeward side of the mountain.
What are desert landforms?
Depression/basin
The surrounding highlands around depressions/basins cause a rain shadow effect leaving the land dry.
What is a Plateau?
A broad, level and elevated region commonly bounded partly by cliffs.
What is a mesa?
Small, flat-topped hill bounded by cliffs. They are usually wider then they are high.
What is a butte?
Narrow hill of resistant rock bounded by cliffs. Usually wider than they are high.
What is a Wadi?
Steep-sided, flat-floored water course which is usually dry.